Dr. Ahmad T. Jaiad<br /><br />Power Distribution Transformers<br />Power distribution transformers are critical components in electrical power systems, responsible for stepping down high-voltage electricity from transmission lines to lower voltages suitable for distribution to homes, businesses, and industries. <br />Types of Power Distribution Transformers<br />1. Based on Insulation Type:<br />o Oil-Immersed Transformers: Use mineral oil for insulation and cooling. Suitable for outdoor installations.<br />o Dry-Type Transformers: Use air or resin for insulation. Safer for indoor use due to fire resistance.<br />2. Based on Phase<br /><br />جامعة المستقبل الجامعة الاولى في العراق<br />o Single-Phase Transformers: Used in residential and rural areas.<br />o Three-Phase Transformers: Common in industrial, commercial, and high-power applications.<br />3. Based on Mounting Type:<br />o Pole-Mounted Transformers: Installed on utility poles for rural and urban distribution.<br />o Pad-Mounted Transformers: Ground-level, enclosed units used in residential and commercial areas.<br />4. Based on Cooling Method:<br />o ONAN (Oil Natural Air Natural) – Self-cooled through natural convection.<br />o ONAF (Oil Natural Air Forced) – Uses fans to enhance cooling.<br /><br />Applications of Power Distribution Transformers<br />• Residential Areas: Supplies electricity to homes and small businesses.<br />• Commercial Buildings: Provides power to malls, offices, and complexes.<br />• Industrial Zones: Powers machinery and heavy electrical loads.<br />• Renewable Energy Systems: Used in solar and wind power plants for voltage regulation.<br /><br />Key Features of Distribution Transformers<br />• High Efficiency: Designed for minimal energy loss.<br />• Voltage Regulation: Maintains stable voltage for consumers.<br />• Robust Insulation: Ensures durability and safety.<br />• Overload Protection: Equipped with fuses and circuit breakers.<br /><br />